内蒙褐煤微波热解特性研究  

STUDY ON MICROWAVE INDUCED PYROLYSIS OF INNER MONGOLIA LIGNITE

作　　者：郝瑛轩[1] 刘全润[1] 李国亮[1] 

机构地区：[1]河南理工大学材料科学与工程学院,河南焦作硕士生454000

出　　处：《煤炭转化》2013年第4期1-5,共5页Coal Conversion

基　　金：国家自然科学基金资助项目(41072153)

摘　　要：研究了内蒙褐煤、热解半焦及煤-半焦混合物在微波场中的升温特性,并对比研究了300℃～750℃温度范围内,内蒙褐煤微波热解和常规热解的特性.研究表明,内蒙褐煤是一种弱微波吸收剂,需添加一定量的半焦作为微波吸收剂才能进行热解反应；在添加10％～30％半焦的范围内,随着半焦添加量的增加,煤-半焦混合物的热解升温速率逐渐增加,焦油和气体产率增加,半焦和热解水产率降低；在添加30％半焦,终温保温20 min的条件下,与常规热解相比,微波热解油、半焦和热解水的产率降低,气体产率增加,其中CO和H2产率显著提高.This paper investigated the temperature rising characteristic of Inner Mongolia lignite（IML） and its pyrolyzed char and the coal-char mixture（CCM） during microwave heating,the production distributions of CCM during microwave and conventional pyrolysis at the temperature of 350 ℃-750 ℃ were also studied.The results shows that IML is a poor microwave absorbent and need to mix with its pyrolyzed char,so that it can be decomposed in microwave field; with the added amount increasing of the char,the heating rate of CCM during microwave pyrolysis is increased,the tar and gas yield are increased also,while char yield is readuced; compared with conventional pyrolysis at similar conditions,microwave pyrolysis produces less char,tar and water,but more gas; and microwave pyrolysis has higher H2 and CO yield than that of conventional pyrolysis evidently.

关 键 词：内蒙褐煤 微波热解 常规热解 产物分布 

分 类 号：TQ530.2[化学工程—煤化学工程]